Power One AURORA PVI-6000-OUTD-AU Series, Инструкция по установке и эксплуатации

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Page 80 of 89
(PVI-6000-OUTD-xx-AU Rev:1.0)
8. TECHNICAL FEATURES
8.1. Input Values
WARNING : the Photovoltaic field and system wiring must be
configured in such a way that the PV input voltage is less than the
maximum upper limit independently from the type, the number and the
operating conditions of the chosen photovoltaic panels.
As panel voltage also depends on working temperature, the number of
panels per string shall be chosen according to the min. ambient
temperature expected in that special area (see table A).
WARNING : Inverter is provided with a linear output power derating
depending on the input voltage, starting from 530 Vdc (100% output
power) to 580 Vdc (0% output power)
WARNING : The open circuit voltage of the photovoltaic panels is
affected by the ambient temperature (the open circuit voltage increases as
the temperature decreases) you have to make sure that the minimum
temperature estimated for the installation doesn’t cause the panels to
exceed the maximum upper limit of 600Vdc. As an example, the
following table shows for typical panels of 36, 48 and 72 cells the
maximum voltage of each panel as a function of the temperature
(assuming a nominal open circuit voltage of 0.6Vdc per cell at 25°C and a
temperature coefficient of -0.0023V/°C). The table shows, therefore, the
maximum number of panels that can be connected in series as a function
of the minimum temperature at which the system will operate. Consult the
panel manufacturer for the correct temperature coefficient of Voc, before
calculating the maximum voltage of the photovoltaic array.